That's admirable, but I'm not sure your viewpoint is so widespread. At least among authors, many view their work as property and would be outraged if anyone tried to "take it away from them".
I think most people now (artists or not) view one's copyrights as real property, and their eventual expiration as an antiquated idea.
If you do that first, then folks who's IP is to be given away free would more likely be on board with the idea.